Hello raingloom thank you for you quick reply!
raingl...@riseup.net writes: [...] > Short untested example: > > (define name "Giovanni") > (define greeting-gexp > #~(begin (with-output-to-file #$output (lambda _ (write (string-append > "Hello, " #$name "!")))))) > > You should be able to use greeting-gexp in place of %my-file-object. I've tested it with this code: --8<---------------cut here---------------start------------->8--- (use-modules (guix gexp)) (define var1 "var1-value") (define var2 "var2-value") (define %another-file-object #~(begin (with-output-to-file #$output (lambda _ (write (string-append "\ # This is an example configuration file # stored in %another-file-object attribute1 = " #$var1 " attribute2 = " #$var2 " ")))))) %another-file-object --8<---------------cut here---------------end--------------->8--- And this is the result: --8<---------------cut here---------------start------------->8--- [~/tmp] giovanni@roquette [genv]\: cat $(guix build --no-offload -e '(load "guix-output-to-file-example.scm")') "# This is an example configuration file\n# stored in %another-file-object\nattribute1 = var1-value\nattribute2 = var2-value\n" --8<---------------cut here---------------end--------------->8--- The output cannot be used in place of %my-file-object, right? AFAIU the solution is to use mixed-text-file as suggested by Tomas Volf yesterday in this thread. Happy hacking! Gio' [...] -- Giovanni Biscuolo Xelera IT Infrastructures
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